Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 342: | \[{15^{342}-1\over14}\] | 24 × 192 × 211 × 229 × 241 × 541 × 739 × 811 × 4561 × 7867 × 13757 × 21061 × 4272113 × 8413543 × 292582141 × 611028193819<12> × 370649274902657<15> × 439799488353587<15> × 2735617627328384723056183<25> × 2766875514023345913942661<25> × 835726294918884968025848899<27> × 6969521913939651515520634098282421<34> × 280169723887673332034123244443863143688431528271<48> × 20791900911241761978707445133319630172520101279595238804990243039767<68> × 1957987143045435146080139233523012782517416759779586858424341262343702829971349<79> |